Packing for shafts of rotary steam-engines.



No. 872.366. ZPATENTED DEC. 3, 1907.

* W. B. VER PLANCK.

PACKING EUR. SHAFTS 0F ROTARY STEAM ENGINES,

APPLICATION' FILED AUG. 7, 1995-..

FQZ

AAF-f I20 |2 H Inventor:

Witnesses: y

i i @0% William lVer` planck, M' y@ i a( f4 WMM WILLIAM Evnsnrr VER PLANcnor .All

Naezaeeea f To ,may concern:

Be 1t known that I, WILLIAMv EVERETT VER PL'ANoK; a citizen of the United States,

residingy State of .Massachusetts, have invented cert'ain new and useful Improvements in Pack- 'ihgs'for'Shafts of Rotary Steam-Engines, of

which thefollowing is a specication. f Thisl invention relates to packing for making a steaintight joint wherethe shaft of a rotary/*steam engine passes out through the rhfbjpa the inf "sation is te ro'vide 'aa-efficient and durable device Whlh Will V' "ntomaticallytake up the 'wear ofits parts hus atallgtimes effectually prevent and" will I pe'ofsteam, The-:invention isv es ecially applicable to the shafts o fsteam tur ines, and for kthe sake "30. in l'sy lengthwise against a stationary surface,

r a also tocompress the segments upon the s'liaft. To insure a complete packing, two or more sets of rings are preferably employed,

'theouter set stopping what little steam may leakfpast the first or inner set.

)gn the accompanyingll drawing, F igure lis a ongitudinal sectional elevation of a portion off. steam turbine embodying my invention; Y' Fig. 2 is a cross section; Fig. 3 isa erspective view of one of the segments of t e outer ring; Fig. 4 is a perspective view cfa segment of the inner rin-g; Fig. 5 is a perspective view of aset of rings, the holders being partly broken away; and Fig. 6 is a cross section showing a modification. The turbine illustrated has a casing 1 through which passes a shaft 2 suitably jour- Analed in a pillow block 3 and carrying the' bucket'wheel 4. The casing has an annular -neck 5 concentric with the shaft and faced off to receive a collar 6 which is secured by the screws -7 or otherwise and has two parallel inwardly projecting flanges 8.' The space between the neck 5 vand the shaft formsv a chamber for the rst or innerset of packing I'AcirmerA ron 'snarrs or ROTARY specificationof Letters Patenti llpplieation ilerl August-" T, 1905. 4Serial Ni). 273002. i

rings,

at SwalIlPscott, county of Essex,

v`will described that l 8 are lugs 20 'which'engagewiththe holders swAMrs'coTr,MAsscnusETTs,rAssIeNoslroeENnR :t ELEOTRIG COMPANY, A ConPoRAT'roNor NEW-vomi;

two flanges Sformsa'c set. 'Thatportion of'the chambers-is turned smoothfandcylindr so .as to make a close fit vwiththe rings which are composedpreferablyiof carft 'misi bon or a carbonacedussubstance, made in segments, preferablytlire ber. The rings have'llat parillellfa s, 'the outer ring .9 iits agairi hefe d' chamber, that is, againstfthe Harige j ends of the segmentsfarelrabbe M the meeting surfaces y10"`;"o f 1t parallel with thejshaft. The 'segm ntsarecut alittleshort to leave ro contr ctinof 70 thering as it wears away'on he inner ring 11 is also compo o fsegi'n rits, preferably three, in iarran'gedfto break jointe with therilsg "The nds of these segments are rabbted' together ut the meeting surfaces' '12* are' radial to the shaft.v

The two rings lie closel together and are inclosed in 'metallic hol er's '13 which are made in segments and have flan es 14 eX- 80 tending inwardly over the inner ace of the inner ring. The holders extend nearly to the flanges 8, :so vas to. cover the joints as completely as possible. The holders arev clamped upon the ring by suitable means, such as the garter springs 15 shown in Figs.` 1 and 2, or the ilat two-.armed s rin s16- shown in Fig. 6; '.-S rings are a o interposed between Athe holders and a stationary portion cf theI casing; such as the iiats rings 17 secured 'to each segment of the older and abutting against the flange 8 or the flat ring 18 secured to the'casing at the base of-v the neck 5.

A rib or ribs `19.on the holdersyent'ers'- a.9l5 corresponding groove or notch in the ed e of Athe rlngs, prevents them. from wor g around intov a position where they joints would register'. On the inside of the iange and preventy the rings from revolving with the shaft. The springs 17 simply hold the ringsQ up to the lflangesS, vas the Steam whlch has free access to the inner of the two chambers vwill force the inner ring tightl a ainst the flange, while the outer ring w l ao be forced a ainst its'abutting flange by the steam that eaks ast thev inner ring.

It is evident thatp no steam can pass through the joints of.t he ring'll in a longi-` 1110 ros ' segments.

tndinal direetibn, brit l1t-could getgthrondh a radin" dimmen .between the ends, u? sie l This is preventedby the holders Whieheompletely cover the joint-s in the ring 11( The steam eannot pass through the' joints of the ring 9 in a radial direction, but

it could get through in a longitudinal direc-` tion. This is revented by t e ring 11 and the abuttingy ange.'V The two rings thus eo' l erate to make a tight lioint.

' at I elaini as newand desire "to secure by Letters Patent of the Unitedl States, is:

- tinJr ends of the segments bein get'lier,I the meeting surfaces' oli the joints 1n` `1. A packing for arctating shaft cornprising' two segmentalf rings lying" side by sideand arran ed to break j`oints,'tl`1e abutting ends oft-1e segments being rabbeted l together.

2. A packing for a rotating shaft oomprising two segmental rings :lying side by side and arranged to break jolnts, the' abutone ring being parallel with theshaft and in the other ring'radial' tliereto.

A paeklng for a rotating shaft oom-- l pris'ing two" segmental rings arran ved to reak joints,v the alfnitting1 ends of the segments being rabbeted together, and segmental-metallic holders overlapping the joints;

4. Apaeking. for a rotating shaft c0111-,

prising two segmentalr rings arranged to break jointst'the abutting ends ofthesegv rabbeted tov svageee `ments being rabbeted together, and segmenytal metallic holders overlapping the Joints, and having ilangesextending inwardly over the face of one ring. t

5. Anpaeking for va rotating shaft comprising two segmental rings lying sideby ments being rabbeted together, and segmenv talV metallicl holders Yoverlapping the jolnts l and having ribs yengaging with grooves in said'rings.

7. The combination with a shaft, of a stationary flange said shaft and'breaking joints, and mehavingl one vor more lugs, twol .carbon packing rinus made 1n segments f1tvtin ta'l 1e` holders for said rings restrained from rotation by said lugs and hatfing ribs engagmgxaidrings.

t Witness whereof I have hereunto set my hand this thirtieth day of June, 1905.

t l; WILLIAM .EVERII'IYI VER PLANCK- Witnesses: g

JOHN A. MoMANUs, Jr., HENRY O. WESTENDARP. 

